Also known as
- Pacific Sierra Mackerel US
- Sierra US
Identification
An Eastern Pacific coastal mackerel with a slim, streamlined torpedo build engineered for fast pursuit of schooling baitfish. Males and females reach similar sizes.
- Three to eight rows of small round orange spots along the flanks — diagnostic mark
- Bronze-green to greenish-blue back grading to silvery-white belly
- Black outer half of the first dorsal fin with a whitish inner portion
- Sharp triangular cutting teeth adapted for slicing baitfish
- Slim, fully scaled body with prominent peduncle keels
Where it holds
- Inshore
Behaviour
A tropical and subtropical coastal-pelagic mackerel forming dense schools along eastern Pacific shorelines. Hunts surface bait in 10-60m, often leaping clear when chasing or spooked. Nocturnal-leaning feeder but also takes lures dawn and dusk. Concentrates inshore when water cools below 24°C (75°F) — the regional cool-season fishery driver. Migrations track baitfish density along the shelf rather than long-range crossings. Continuous swimmer with no swim bladder.
Diet: Anchovies, Small Sardines, Small Herring, Small Mullet, Small Squid
How it's caught
Line Fishing
Trolling
The defining Eastern Pacific approach — slow-troll Clark spoons, small Rapalas, and feathered jigs at 4-6 knots just below the surface along the continental shelf and inshore baitfish concentrations. Target 15m depths where schools hold. 0.5m of #5-7 single-strand wire leader mandatory. Watch for bird workups and surface flashes.
Spinning
An accessible panga and skiff fishery across Sea of Cortez and the Mexican Pacific — sight-cast 30-60g surface iron (Tady 45), small stickbaits, and metal jigs into surface bust-ups with fast continuous retrieves. PE2-3 setups with 0.5m of #5-7 single-strand wire leader. Cast ahead of moving schools and bird workups.
Jigging
Effective when schools hold deeper or refuse surface presentations. Drop 30-80g knife jigs and slim metal jigs through 15-25m school marks; fast erratic vertical action triggers reaction strikes. PE2-3 setups with 0.5m of #5-7 single-strand wire leader.
Surf Casting
Productive across Mexican and Central American beaches when schools push bait against the shoreline during the cool-season run. Long-cast 30-50g metal jigs and slim spoons with fast continuous retrieves. Target dawn and dusk feeding windows. 0.5m of 30lb single-strand wire leader handles teeth.
Fly Fishing
Saltwater Fly
A productive light-tackle fly target across the Sea of Cortez and Mexican Pacific when schools push bait within reach of skiffs and pangas. Cast sparse Clouser Minnows, surf candies, and anchovy patterns from a 8-9wt rod with floating or intermediate line. Fast erratic strips trigger committed strikes. 30cm of 30lb single-strand wire shock tippet handles teeth.
Spear Fishing
Inshore Spearfishing
Productive around inshore reef edges, headlands, and shallow shelves during cool-season concentrations. Active hunting — schools pass quickly, fast lead and decisive shots required. Best in clear water with 15m+ visibility, calm conditions, and dawn-window light.
